<center>
<form action="control/c_tabla.php" method="post">
<table>
    <tr>
        <td>filas
        </td>
<td><input type="text" name="filas" >
        </td>
    </tr>
    <tr>
        <td>columnas
        </td>
<td><input type="text" name="columnas" >
        </td>
        </tr>
</table>
 <input type="submit" value="Generar">
</form>
</Center>